Frame spirit levels

Bubble (frame)

— spirit frame levels allow you to control the parallelism and flatness of surfaces with precision accuracy. A good frame level makes it possible to detect surface irregularities with an accuracy of 0.01 mm per 1 metre. Frame levels are widely used when checking the guides of metal-cutting machine tools. With a frame-type spirit level, it is convenient to control the evenness of the guides after their repair by scraping, milling and grinding. Spirit frame levels are considered universal metres, because the frame structure has 4 edges. That is, this level can be entrusted with the control of both horizontal and vertical surfaces. Additionally, one or more faces can have a prismatic shape, which makes it possible to put the level on a cylindrical surface, that is, on a shaft.